Did You Know?
The NEC Requirements For Use Of Anti-Short Bushing
When installing ARMORED CABLE (Type AC), NEC article 320.40 mandates the use of a insulating bushing (commonly referred to as Anti-Short or Redhead) between the metal sheath and the conductors. Fittings with insulated throats are not a substitute for the anti-short bushing. Always use UL listed anti-short bushings, Bridgeport cat. nos. 1000 through 1008.
When installing METAL-CLAD CABLE (Type MC), the NEC does not require the use of a Anti-Short insulating bushing. MC cable conductors are usually wrapped with mylar tape for protection, use of anti-short bushing is optional unless specified otherwise by the cable manufacturer.
Note: Above comments are not an interpretation of the National Electrical Code (NEC) or local regulations. Always consult your local electrical inspector for requirements in your area.
Please send your comments and questions to attn: Engineering at Bridgeport Fittings, Inc., Phone 203.377.5944, Fax: 203.381.3488 or email: eng@bptfittings.com